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KMID : 1171820060210010001
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Journal of Environmental and Sanitary Engineering
2006 Volume.21 No. 1 p.1 ~ p.11
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Concentration Characteristics of PCBs in Pine Needle and Soil at Rural Area
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Shin Eun-Sang
Yeo Hyun-Gu
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Abstract
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This study was to investigate concentration characteristics of atmospheric PCBs in soil sample and pine needle at rural area. Profiles of PCB congener detected in pine needle and soil sample have a difference that low molecular PCBs mainly existed in pine needle, whereas high molecular PCBs were mainly existed in soil sample because of their different vapor pressure and octanol-air partitioning coefficient( KOA) of each congeners. Correlation coefficients(r) of PCB congeners simultaneously detected in soil and pine needle were significant (r＞0.71, p＜0.01), which showed that PCB congeners patterns of atmosphere could be estimated in using pine needle and soil sample indirectly. The contributions(%) of higher molecular PCBs(＞penta-CB) to total PCBs in soil sample were higher than those of pine needle and the contribution of lower molecular PCBs(＜tetra-CB) in soil sample were lower than those of pine needle, which showed that dry gaseous deposition was a principal pathway of PCBs accumulation in pine needle.
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KEYWORD
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Soil, pine needle, deposition, PCBs
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